The main email servers are SMTP for sending emails, IMAP and POP3 for receiving emails, and each uses specific network ports such as SMTP (25, 465, 587), IMAP (143, 993), and POP3 (110, 995). These servers and ports work together to ensure emails are transmitted securely and reliably between senders and recipients across the internet. Now let’s fully understand how each email serve... https://oudel.com